Question

5. Density helps to understand
(a) the motion of materials
(b) the motion of gases in atmosphere
(d) none of the above
(c) floating or sinking of an object in the water​

Answer 1

Answer:

Scientists define density as the mass of a substance per unit volume. The word “per” signals that thinking about density requires thinking about a relationship. It is the relation between the mass (or weight) of one unit of a material and the volume of that one unit. Density cannot be directly perceived or measured.